High-power klystrons for the Next Linear Collider

Author

Phillips, Robert M. ; Sprehn, Daryl W.

Author_Institution

Linear Accel. Center, Stanford, CA, USA

Volume

87

Issue

5

fYear

1999

fDate

5/1/1999 12:00:00 AM

Firstpage

738

Lastpage

751

Abstract

The Stanford Linear Accelerator Center (SLAC) version of the 1 TeV next linear collider (NLC) requires a 4:1 increase in drive frequency, from the 2.85 GHz of the 1 TeV Stanford Linear Collider (SLC) to 11:4 GHz for the NLC. More than eight years have gone into the development of a new 75-MW klystron for powering the NLC. The increase in power density and surface RF gradient at the higher frequency have rendered previous RF window and circuit designs unusable. Following numerous catastrophic gun, cavity, and window failures, new designs have evolved that solved the problems. As history´s most ambitious klystron development enters its last year, the result includes a robust 75-MW peak power solenoid-focused, 50% efficient klystron. Not far behind is a 60-75-MW periodic permanent magnet (PPM)-focused 60% efficient version that will reduce the NLC electric power bill by tens of millions of dollars per year

Keywords

accelerator RF systems; electron accelerators; klystrons; linear colliders; 1 TeV; 11.4 GHz; 50 percent; 75 MW; Next Linear Collider; SLAC NLC; accelerator RF system; high-power klystron; periodic permanent magnet focusing; solenoid focusing; Circuit synthesis; Costs; Electron beams; Klystrons; Linear accelerators; Microwave circuits; Permanent magnets; Radio frequency; Structural beams; Superconducting magnets;

fLanguage

English

Journal_Title

Proceedings of the IEEE

Publisher

ieee

ISSN

0018-9219

Type

jour

DOI

10.1109/5.757253

Filename

757253